/?pl??ks ?kɑ?n.st?nt/anumberthat neverchangesand thatexpressestherelationshipbetween theenergyof aphotonanditsfrequency普朗克常数SMART Vocabulary: related words and phrasesPhysics: particular theories & concepts
aphelion
azimuth
chaos theory
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dark matter
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element
libration
locomotive
momentum
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perihelion
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refraction
relativity
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See more results ?(Definition ofPlanck's constantfrom theCambridge Advanced Learner's Dictionary & Thesaurus? Cambridge University Press)